1700mAh extended battery

Hey guys, I had been order the 1700mah extended battery from Mugen Power online shop,
they will release the item on 2 july,2011, so I guess I will received the product either on 4 or 5 july,2011 , Galaxy S II is so wonderful, but so fast to out of power. Anyway, it can as a backup, I think is a good choice.
http://www.mugenpowerpdabattery.com/zaspx/product_details.aspx?file=sh&productno=1250&PageNo=&sortby=sortid&orderby=desc&keyword=i9100

I got my 2600 mA/h battery about a week ago and I looooooooooooooove it!

I got it here : http://www.batteryupgrade.com/shopBrowser.php?assortmentProductId=24947904&shopGroupId=74682914

Note, I have the same type for my wife's Nexus S... and have been running my old Galaxy S with their equivalent for it for almost as long as I've had the "S". This brand of battery really rocks. It's bigger. So it comes with a special back... which makes the phone bulkier... but double the battery life almost... wow! And about 3/4th the price of the Mugen battery...

Gilles.